And thanks to a recent chat with Seth himself, our curiosity is even further piqued, in that we now know our favorite blue-eyed, former teen star fully intends to "sully" his squeaky clean, boy-next-door image with what Seth teased as a shocking performance.

"He was really looking to be sullied, which is why we thought it would be a good idea," Seth told MTV News of how Zac came to be involved in the film. "I've met him a few times over the years and the first thing you get from him is that he knows that a guy like me would probably hate him, and he works directly to counteract that feeling, which shows an amount of self awareness that is not prevalent among many young stars these days that I've met at award shows recently. And I think that's why I thought it would be really funny, he seemed like he was a really cool guy, that he'd be fun to work with and seemed that he was capable of much more than the Disney stuff we've seen him in."

So what exactly will Zac be up to in this untitled, R-rated comedy?

"He's the president of a fraternity who really does despicable things, as the president of a fraternity would do," Seth revealed. "We [Seth and his writing/producing partner Evan Goldberg] were just pitching him these ideas, and he was going along with it. We kept looking at each other, like 'He's actually going along with this stuff,' and then he would come up with things that would be pushing it further and we thought, 'Wow, people are really going to be shocked.' And so it's exciting to us."

Are you ready for Zac Efron to sully his good-boy image? Tell us in the comments or on Twitter!